the soap dispenser requires four D size 1

110-240VAC -Surface Mtd

Handle Color: Orange

Full Load Amps: 19

Apollo Check Valve, 3/4 in, Single, Inline Swing, Bronze, Press x Press - 61YLF204T1PR Soap Dispensers the soap dispenser requires fourLow Lead Bronze Swing Check Valves, Max. pressure: 200 psi Max. temp.: 250F,Designed for direct mechanical connection to ASTM B88 Type K, L, and M hard drawn copper tubing. PTFE seats. Press connection. Not for use with reciprocating pumps and similar applications. Not suitable for flammable gas or steam service. Can be mounted vertically or horizontally.,Meet NSF ANSI 61 8 (2010) Annex F and G, and MSS SP139.